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VTPv3 Sim

October 11th, 2018 Go to comments

You have been asked to install and configure a new switch in a customer network. Use the console access to the existing and new switches to configure and verify correct device configuration.

VTP_Topology.jpg

Question 1

Explanation

To comply with the configuration of other switches, we need to get VTP configuration of Sw1 or Sw2. On Sw1 use the “show vtp status” command:

Sw1_show_vtp_status.jpg

From this output we learn on Sw1:
+ VTP is running version 3
+ VTP Domain is “CCNP”
+ Sw1 is the VTP Primary Server (we will explain about Primary Server later. Now just understand it is in VTP Server mode)

So on the New_Switch, the VTP Domain must match. New_Switch should run VTP version 3 if if can (but it is not a must as VTP version 2 is compatible with VTP version 3). The New_Switch is connecting to hosts so it is in Access Layer so it should be configured as a VTP Client (although Transparent mode is acceptable) so there are only two suitable choices D & E.

From the exhibit, the New_Switch is connecting to a host in VLAN 100 so its E0/0 interface should be in VLAN 100 -> only D is correct.

Question 2

Explanation

On Sw1 & Sw2 we can check with the “show interfaces trunk” command:

Sw1_show_interfaces_trunk.jpg

Sw2_show_interfaces_trunk.jpg

Sw1 & Sw2 are connected through E2/3 & E2/3 so we can see the native Vlan on these trunks are 99. We should check both Sw1 & Sw2 to see if the Native Vlan on both sides match.

Question 3

Explanation

Use the “show vtp status” on SW1 and SW2 we notice both of them are in “Server” mode so we should choose: A. Configure VLAN 500 & VLAN 600 on both SW1 & SW2.

In practical we only need to create VLANs on one of the “Server” switch and these VLANs will be propagated automatically to others “Server” and “Client” switch. But maybe it is not the answer Cisco wants (as it makes both answers B & C are correct).

Question 4

Explanation

To configure private VLAN we have to change VTP (even version 3) to Transparent mode. In fact, to disable VTP pruning on Sw4 (in Client mode) we also have to change to VTP Transparent mode so answer C can be understood as “change SW4 to Transparent mode” so it is the best choice.

Note: Unlike VTP version 1 and 2 in which VTP pruning is enabled on VTP Server only, VTP version 3 requires VTP pruning must be enabled on all the switches in the VTP domain so we can also disable VTP pruning on each switch separately. Here is the link for your reference: http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750x_3560x/software/release/12-2_55_se/configuration/guide/3750xscg/swvtp.html

“With VTP versions 1 and 2, when you enable pruning on the VTP server, it is enabled for the entire VTP domain. In VTP version 3, you must manually enable pruning on each switch in the domain.”

Comments
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  1. Mx13
    January 27th, 2020

    Hello!
    I think the best answer for Q3 is B:
    “Configure Vlan 500 and Vlan 600 on SW1 only”.
    The question states: “You are adding new Vlans” – I understand this as that I have to add new vlans to switch configuration, to vlan database. In my opinion add=create. So creating vlans is only possible on primary server in VTPv3, hence the answer B.
    The question ask: “Which configuration STEP is valid?” STEP, just one STEP that is needed to conifgure described functionality. None of the answers states” configure STP on SW1 and 2……, each answer is about configuring VLANs, so ans. B is best.

  2. HV
    January 27th, 2020

    @Mx13 – is it possible that the Q3 is not about VTP but about the configuration of VLAN? Read the question and answers carefully. Answers aren’t about add vlan but about their configuration.

  3. Anonymous
    January 27th, 2020

    Q3…it’s possible to make both with configuration on sw1 only with spanning-tree priority command

  4. DeeJay
    January 29th, 2020

    Thinking about Q4, it asks “which of the following configuration steps will allow creating private VLANs?” and it confuses with “new server deployment connecting to the SW4″… just think:

    if you will disable VTP Pruning on a SW4 which is configured with VTP client, you still won’t be able to configure PVLANs

    but
    if you disable VTP pruning on VTP server (SW1) then u can do PVLANs on SW1 and they will get pushed to SW4 because of VTPv3.

    So the only right answer is to Disable VTP Pruning on SW1

    A. Disable VTP pruning on SW1 only

    Anyone disagree?

  5. DeeJay
    January 29th, 2020

    Also for Q3, you’re only configuring new vlans500 and 600 on SW1. Have a read about VTPv3 – only 1 “master” VTP Server, other switches configured with VTP Server will “learn” about new VLANs from Master VTP server so

    B> Configure Vlan 500 and Vlan 600 on SW1 only

  6. Saeed
    January 30th, 2020

    Hi Guys,

    Can you answer, do we need to make configuration or just select the one of the Options?

  7. suntzu
    February 2nd, 2020

    (quote)Answer: C

    Explanation

    To configure private VLAN we have to change VTP (even version 3) to Transparent mode. In fact, to disable VTP pruning on Sw4 (in Client mode) we also have to change to VTP Transparent mode so answer C can be understood as “change SW4 to Transparent mode” so it is the best choice./(quote)

    Does not make sense. In vtp version 3 if in client or server mode, you can modify vtp pruning.
    I tested it and while sw4 on THIS SIM does say running version 3, you can run “vtp pruning” or “no vtp pruning” whie in client and server mode.

    Only for version 1 or 2 does it force you to modify in SERVER mode only.
    So, turn off vtp pruning on sw4 WOULD HAVE BEEN THE RIGHT ANSWER BUT LOOK HERE:

    PVLAN are supported in transparent or server mode for VTP VERSION 3. SW4 is vtp version 3. So, even if you do turn off pruning, you still CANNOT CREATE PVLAN because Sw4 is client. IT needs to be transparent or server.

    On the real test, if the answer says “make transparent and turn off pruning on sw4” then yes, choose that answer, otherwise choose Sw1 ONLY.

  8. suntzu
    February 2nd, 2020

    @Saeed

    January 30th, 2020

    This is just a “pick answer” type of SIM. It is not interactive.

  9. Dan21
    February 3rd, 2020

    So…. Does anyone know the correct answers yet? lol what a stupid Sim

  10. FeasibilityFreak
    February 3rd, 2020

    Q3

    Regarding Q3, Cisco says:

    VTP primary server and VTP secondary servers. A VTP primary server updates the database information and sends updates that are honored by all devices in the system. A VTP secondary server can only back up the updated VTP configurations received from the primary server to its NVRAM.

    As we can see, the SW1 is indeed configured as the Primary Server (Q1). Therefore the answer B should be correct answer in this case. I am however unsure what should be done with STP part of the question. Possibly Cisco beacon so we click the A as the answer…

  11. rickey
    February 4th, 2020

    pls share me latest dump k6206700 at gmail dot com

  12. Jimmy
    February 4th, 2020

    Q3, answer is A

  13. Dan21
    February 4th, 2020

    I still don’t know answers to Q3 and Q4… really confused here

  14. Q1 No intervlan routing?
    February 5th, 2020

    Q1. pc2 is in vlan 200,

    I am trying to have reachability to pc2,

    I am only configuring New_Switch

    so shouldn’t I apply vlan 200 to New_Switch interface E0/0. answer E,

    as stated, VTP V2 V3 are compatible, answer E has the correct VTP Domain Name, but only answer E will place both PC1 and PC2 in the same vlan

    in the show commands there is no inter-vlan routing occurring.

    Or am I missing something?

  15. FeasibilityFreak
    February 6th, 2020

    PC1 must be configured in VLAN100 as shown on the picture. Routing could be done in the Core.

    Regarding Q3 I would ansewer B.

    Q4 I would pick A. (VTP Questions 3, Question 4 says exact the same).

  16. VTPv3
    February 7th, 2020

    Hi,

    I had the exam yesterday. VTPv3 was on the exam.

    SIMs / Questions still valid, dont pay for it additionally.

    Good luck to everyone
    Cheers

  17. Q1 No intervlan routing?
    February 7th, 2020

    FeasabilityFreak-
    Thanks. I guess I was assuming too much- the net-diagram says it is supposed to be in vlan 100 so just make it so. Got it.

  18. Switch
    February 11th, 2020

    @VTPv3
    What is your take on questions 3 and 4? Same as this site says or what was commented by @@@ on 1/20/19
    I answered the following:

    Q1) D
    Q2) B
    Q3) B
    Q4) A

    Scored mid 900’s.

  19. VTPv3
    February 16th, 2020

    @Switch, I answered same as you are. This is only what makes sense for me, so I choose Q3 answer B and Q4 answer A. Not sure if that is correct, in my opinion it is.

  20. FNetL
    February 20th, 2020

    Dears all,
    can somebody share information related the last LAB proposed during last exams. What LAB are in the pool of the last sessions?

  21. Roccosteppo
    February 20th, 2020

    Question 3 is wrong, if SW1 is the VTP Primary Server (VTP v3 enabled and it is the primary) you can add the configuration to SW1 only…
    There are a lot of questions on certprepare site that should be reviewed.
    Sometime you see the same question with different answers.
    I have my exam tomorrow and I’m scared as f**k.

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